The Würth #8 x 2-1/4" flat head assembly screw is built for cabinet carcass construction, panel-to-panel joints, and wood assemblies where a longer reach matters. The square drive, Type 17 auger point, coarse thread, and underhead nibs work together to deliver a clean, flush-seated result across a range of wood substrates.
Most cabinet and furniture assembly screws top out at 1-1/2 or 2 inches, which works well for single-panel connections. The 2-1/4 inch length steps in when the joint is thicker: attaching a 3/4-inch back panel through a 1-1/2-inch frame member, joining two full-thickness panels edge-to-face, or fastening through a finished face into a substrate with meaningful depth. It is also a practical choice when panels have been dadoed or rabbeted and the landing point for the tip sits deeper than usual. The extra length keeps thread engagement strong without requiring a pilot hole in most softwood and mid-density engineered panel work.
The flat head profile with underhead nibs is designed for flush installation. As the screw is driven, the nibs mill a seat directly in the wood surface, so the head lands cleanly without a pre-drilled countersink in most softwoods and composites. In harder species, a shallow countersink pass before driving will give the cleanest result. The zinc finish suits dry, indoor environments and is standard for interior cabinet and furniture work. This screw is for interior use only.
Cabinet shops running carcass assemblies in solid wood or plywood reach for this length when the joint depth calls for more than a 2-inch screw can provide. Furniture makers joining thicker frame members, installers building out closet systems with layered panels, and millwork shops working with 1-1/2-inch or double-stacked stock will find the 2-1/4 inch useful across a range of joints. The 1000-piece box keeps production lines moving without frequent restocking. A correctly sized #2 square bit is all that is needed on the driver.
The extra quarter inch matters when the near-side panel is thicker than 3/4 inch, when panels are layered, or when dadoes and rabbets move the bearing surface deeper into the joint. It keeps thread engagement solid in those situations without switching to a longer fastener.
In softwood and most mid-density engineered panels, the Type 17 auger point handles entry without a pilot hole. In dense hardwoods or when driving near an edge, a pilot hole reduces splitting risk and gives more predictable results.
The nibs work well in softwood, plywood, MDF, and particleboard. In harder hardwoods like maple or oak, a light countersink pass before driving will give a cleaner flush seat.
No. The zinc finish is rated for dry interior environments. For exterior or high-moisture applications, choose a screw with a corrosion-resistant coating suited to those conditions.
A #2 square drive bit. The recess is designed to hold the screw on a correctly sized bit, which supports one-handed placement during installation.
When the joint calls for more reach than a standard 2-inch screw delivers, the Würth #8 x 2-1/4" assembly screw keeps the connection tight and the head seated flush, without a change in drive or installation approach.
Sold In: 1000 Each
